<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml"
      xmlns:th="http://www.thymeleaf.org">

<head>
    <meta charset="UTF-8">
    <title>hello</title>
</head>
<body>
<h3>欢迎您, [[${session.user.username}}]]</h3>

</body>
</html>